CN105948545A - Production technology of ecological concrete - Google Patents

Production technology of ecological concrete Download PDF

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Publication number
CN105948545A
CN105948545A CN201610364519.7A CN201610364519A CN105948545A CN 105948545 A CN105948545 A CN 105948545A CN 201610364519 A CN201610364519 A CN 201610364519A CN 105948545 A CN105948545 A CN 105948545A
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China
Prior art keywords
concrete
aggregate
eco
discarded
coarse aggregate
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CN201610364519.7A
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Chinese (zh)
Inventor
徐德龙
朱建辉
张伟
刘文欢
钱长联
徐德虎
马立全
朱玮杰
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Gansu Delong Ecological Building Material Co Ltd
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Gansu Delong Ecological Building Material Co Ltd
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Priority to CN201610364519.7A priority Critical patent/CN105948545A/en
Publication of CN105948545A publication Critical patent/CN105948545A/en
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/24Cements from oil shales, residues or waste other than slag
    • C04B7/246Cements from oil shales, residues or waste other than slag from waste building materials, e.g. waste asbestos-cement products, demolition waste
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10Coating or impregnating
    • C04B20/1018Coating or impregnating with organic materials
    • C04B20/1029Macromolecular compounds
    • C04B20/1033Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10Coating or impregnating
    • C04B20/1051Organo-metallic compounds; Organo-silicon compounds, e.g. bentone
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/24Cements from oil shales, residues or waste other than slag
    • C04B7/243Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/36Manufacture of hydraulic cements in general
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • Y02P40/121Energy efficiency measures, e.g. improving or optimising the production methods
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses a production technology of ecological concrete. The production technology comprises the steps of preparing an ecological cementing material by using construction waste clay bricks, and preparing recycled aggregate by using construction waste concrete; uniformly mixing cement and the ecological cementing material, then adding part of water, natural fine aggregate and recycled fine aggregate, stirring to form slurry, then adding natural coarse aggregate, recycled coarse aggregate, the rest water and a pumping aid, and stirring to prepare C30-C40 strength grade ecological concrete. By adopting the production technology of the ecological concrete, provided by the invention, useful components of construction waste are effectively used, the waste is turned into wealth, resources are saved, and the recycling of the construction waste resources is realized; the prepared ecological concrete is comparative with normal concrete in performance, is low in production cost, and can be largely applied to general construction engineering.

Description

A kind of production technology of eco-concrete
Technical field
The invention belongs to construction material and resources circulation field, particularly to the production work of a kind of eco-concrete Skill.
Background technology
Along with developing rapidly of China's economic society and quickly propelling of urbanization process, Development control area creates A large amount of building wastes, its composition is basically identical, discarded sand, discard clay brick, discarded concrete with And light materials and the waste metal etc. such as paper, waste plastics, fabric, rubber.Overwhelming majority building waste at present Take the modes such as stacking or landfill to process, not only occupy a large amount of valuable land resource, also environment can be made Become severe contamination.In building waste, substantial amounts of discarded clay brick and discarded concrete can be prepared by reasonable process Ecological Binder Materials and regeneration aggregate, be used for preparing eco-concrete.Thus the resource of building waste can be realized Change recycles.
Building Trade in China rapid growth in recent years, commerical ready-mixed concrete demand is significantly increased, as a example by 2014, Chinese commodity concrete yield is 15.54 hundred million m3, these concrete need to consume substantial amounts of natural resources.Profit The ecological Binder Materials prepared with building waste and regeneration aggregate preparation eco-concrete, realizing building waste Significantly reduce Concrete Industry natural resources consumption while resource, there is significant social benefit and ring Border benefit.
Summary of the invention
For overcoming the shortcoming of above-mentioned prior art, it is an object of the invention to provide the life of a kind of eco-concrete Production. art, utilizes the ecological Binder Materials of construction waste clay brick preparation, utilizes construction waste concrete to prepare again Raw aggregate.After cement, ecological Binder Materials mix homogeneously, add part water, natural fine aggregate, regeneration Fine aggregate, stirs pulping, then row adds natural coarse aggregate, regenerated coarse aggregate, residue water and pumping admixture stirring Preparation C30, C40 strength grade eco-concrete.
For achieving the above object, the technical solution adopted in the present invention is:
The production technology of a kind of eco-concrete, comprises the steps:
Step 1, prepared by ecological Binder Materials: the construction waste clay brick material sub-elected through volumetric method is passed through magnetic Screening device and light materials sorting unit remove irony material and light materials, are broken for size≤50mm through disintegrating apparatus Block brick material, by Vertical Mill superfine grinding after magnetic separation, prepare specific surface area >=500m2The clay brick powder of/kg, In grinding process, allocate a certain proportion of chemical activator into, and be combined with slag micropowder, preparation ecology gelling Material;
Step 2, prepared by regeneration aggregate: prepared by one-level is broken by the discarded concrete material sorted through volumetric method The granular material of particle diameter≤80mm, removes irony material and light thing by concentration equipment and light materials sorting unit Matter, then prepares the aggregate of different-grain diameter, in proportion compound preparation regeneration by two-stage crushing and screening system Aggregate, for improving regenerated coarse aggregate intensity further, reducing water absorption rate, the regenerated coarse aggregate of preparation is through autogenous grinding After shaping, carrying out strengthening water conservation to it by chemical enhancer, recycled fine aggregate removes micropowder and mud through washing Block.During sieving approach, by atomising device dedusting;
Step 3, Primary batching system stirs: according to the match ratio requirement of different strength concrete, by cement, Ecological Binder Materials is discharged into powder mixing device after measuring respectively simultaneously and carries out pre-homogenizing being dry mixed, after mix homogeneously Being discharged into blender, pro rata heavily adds natural fine aggregate and recycled fine aggregate, gross water requirement 60%~80% Water stirring pulping;
Step 4, second batch stirs: by through the natural coarse aggregate of pre-homogenizing, regenerated coarse aggregate, residue water Blender is heavily added, with the slurry mix and blend made through Primary batching system stirring with pumping admixture pro rata;
In described step 1, construction waste clay brick material obtains from building waste in the following way:
By loader, building waste is fed apron feeder, and building waste is sent into sorting by apron feeder Machine, utilizes volumetric method sand discarded in building waste, discarded clay brick, discarded concrete to be separated, and formation is built Build discarded sand material, construction waste clay brick material and three kinds of primary product of construction waste concrete material;Wherein, institute State the discarded clay solid brick that is mainly composed of of construction waste clay brick material, also comprise very small amount particle diameter≤70mm Concrete block.
In described step 1, chemical activator is Gypsum Fibrosum, Calx, triisopropanolamine and diethanol list isopropanol One or more of amine, addition is: Calx 1.5~5%, Gypsum Fibrosum 4~6%, triisopropanolamine 0.015~0.03%, diethanol monoisopropanolamine 0.015~0.03%, it is the mass percent of clay brick powder.
In described step 1, slag micropowder volume is the 0%~40% of clay brick opaque amount, described slag micropowder Specific surface area >=450m2/kg。
In described step 2, construction waste concrete material obtains in the following way:
By loader, building waste is fed apron feeder, and building waste is sent into sorting by apron feeder Machine, utilizes volumetric method sand discarded in building waste, discarded clay brick, discarded concrete to be separated, and formation is built Build discarded sand material, construction waste clay brick material and three kinds of primary product of construction waste concrete material;Described building Discarded concrete material, it is mainly composed of discarded building girder, plate, post concrete block.
In described step 2, two-stage crushing device therefor is impact breaker, cone crusher or vertical shaft hammer Formula disintegrating machine, screening system is vibrosieve, screen size from bottom to top be the four of D1, D2, D3, D4 Layer screen cloth composition, D4 on-the-sieve material returns after two-stage crushing device carries out crushing and again sieves, minus mesh at different levels Store respectively by particle diameter;Wherein D1 be 2.36mm, D2 be 4.75mm, D3 be 9.5mm, when two grades break When broken device therefor is impact breaker, D4 is 26.5mm, when two-stage crushing device therefor is circular cone type When disintegrating machine or vertical-spindle hammer crusher, D4 is 31.5mm.
One during D1 minus mesh in described step 2, D1 and D2 minus mesh are combined in proportion is the thin bone of regeneration Material, D2, D3 oversize is compound in proportion prepares regenerated coarse aggregate regeneration aggregate, and compositely proportional should make thick, thin Aggregate meets grain composition requirement, and recycled fine aggregate compositely proportional is D1 minus mesh: D2 minus mesh is 70~100:30~0, regenerated coarse aggregate compositely proportional is D2 oversize: D3 oversize is 30~50:70~50.
In described step 2, the regenerated coarse aggregate after shaping adds chemical enhancer solution soaking so that it is strengthening is protected Water, wherein, chemical enhancer is polyvinyl alcohol or organosilicon, when for polyvinyl alcohol, poly-vinyl alcohol solution Mass concentration is 0.5%, and regenerated coarse aggregate soak time is 36~48h;When for organosilicon, organosilicon is used Water 5~6 times of uses of dilution, regenerated coarse aggregate soak time is 12~24h.
In described step 3 and step 4, the consumption of each component is:
C30 eco-concrete
PO42.5 cement: 238kg~272kg
Ecological Binder Materials: 68kg~102kg
Water: 160kg
Pumping admixture: 6.8kg~8.5kg
Natural coarse aggregate: 820kg~1172kg
Regenerated coarse aggregate: 0~352kg
Natural fine aggregate: 360kg~720kg
Recycled fine aggregate: 0~360kg
C40 eco-concrete
PO42.5 cement: 322kg~368kg
Ecological Binder Materials: 92kg~138kg
Water: 165kg
Pumping admixture: 9.2kg~11.5kg
Natural coarse aggregate: 787kg~1125kg
Regenerated coarse aggregate: 0~338kg
Natural fine aggregate: 345kg~690kg
Recycled fine aggregate: 0~345kg
Thus configuration obtains C30, C40 eco-concrete.
In described step 3 and step 4, use online detection instrument, measure containing in natural thick, fine aggregate Water rate, feeds back central control system in time, is deducted by brought into moisture in natural thick, fine aggregate in gross water requirement.
Compared with prior art, the invention has the beneficial effects as follows:
(1) eco-concrete production technology provided by the present invention, effectively utilizes building waste useful constituent, Turn waste into wealth, economize on resources, it is achieved that building waste resource circulation utilization, have significant social benefit and Environmental benefit.
(2) ecological Binder Materials preparation method employing vertical mill grinding technique provided by the present invention, collection drying, Grinding, select powder one, low-carbon energy-saving environmental protection.By rational physics and chemical activation approach, efficiently excite The lateral reactivity of construction waste clay brick.
(3) regeneration aggregate preparation method provided by the present invention is simple, by autogenous grinding shaping and strengthening water conservation, Improve aggregate intensity, reduce water absorption rate, it is achieved that utilize low-intensity discarded concrete to prepare high-quality Regenerated Bone Material, the regeneration aggregate product quality prepared is suitable with natural aggregate, can substitute natural aggregate in a large number.
(4) eco-concrete using the present invention to be prepared is suitable with normal concrete performance, and production cost is low, Common buildings engineering can be widely used in.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart.
Detailed description of the invention
Embodiments of the present invention are described in detail below in conjunction with the accompanying drawings with embodiment.
As it is shown in figure 1, the production technology of a kind of eco-concrete, comprise the steps:
Step 1, prepared by ecological Binder Materials: the construction waste clay brick material sub-elected through volumetric method is passed through magnetic Screening device and light materials sorting unit remove irony material and light materials, are broken for size≤50mm through disintegrating apparatus Block brick material, by Vertical Mill superfine grinding after magnetic separation, prepare specific surface area >=500m2The clay brick powder of/kg, In grinding process, allocate a certain proportion of chemical activator into, and be combined with slag micropowder, preparation ecology gelling Material;
Step 2, prepared by regeneration aggregate: prepared by one-level is broken by the discarded concrete material sorted through volumetric method The granular material of particle diameter≤80mm, removes irony material and light thing by concentration equipment and light materials sorting unit Matter, then prepares the aggregate of different-grain diameter, in proportion compound preparation regeneration by two-stage crushing and screening system Aggregate, for improving regenerated coarse aggregate intensity further, reducing water absorption rate, the regenerated coarse aggregate of preparation is through autogenous grinding After shaping, carrying out strengthening water conservation to it by chemical enhancer, recycled fine aggregate removes micropowder and mud through washing Block.During sieving approach, by atomising device dedusting;
Step 3, Primary batching system stirs: according to the match ratio requirement of different strength concrete, by cement, Ecological Binder Materials is discharged into powder mixing device after measuring respectively simultaneously and carries out pre-homogenizing being dry mixed, after mix homogeneously Being discharged into blender, pro rata heavily adds natural fine aggregate and recycled fine aggregate, gross water requirement 60%~80% Water stirring pulping;
Step 4, second batch stirs: by through the natural coarse aggregate of pre-homogenizing, regenerated coarse aggregate, residue water Blender is heavily added, with the slurry mix and blend made through Primary batching system stirring with pumping admixture pro rata.
Specifically, when preparing C30 eco-concrete, its technical process and parameter such as embodiment 1:
Step 1, prepared by ecological Binder Materials: the construction waste clay brick material sub-elected enters before disintegrating machine by electricity After deironing device, belt feeder electromagnetic cylinder and light materials sorting unit remove irony material and light materials, through meticulous Broken jaw crushing crusher machine, prepares the block brick material of size≤50mm, before block brick material enters Vertical Mill, through electromagnetism After tramp iron separator and belt feeder electromagnetic cylinder remove irony material further, by vertical mill grinding, grinding process is pressed The mass ratio of 0.02% adds triisopropanolamine, prepares specific surface area 650m2The fine powder of/kg, mixes 40% Specific surface area is 450m2/ kg slag micropowder, through batch mixer mix homogeneously, prepares ecological Binder Materials;By GB/T 2847-2005 " pozzolana mixed material in cement " detects, high activity ecology Binder Materials 28d Compressive strength rate is 97%;
Step 2, prepared by regeneration aggregate: the discarded concrete material sub-elected uses jaw crusher to carry out one-level and breaks Broken, prepare the granular material of particle diameter≤80mm, by the combination of electric magnetic iron remover, electromagnetic cylinder except ferrum mode And light materials separator, after removing the irony material in concrete particle shape material and light materials, utilize circular cone Formula disintegrating machine carries out two-stage crushing, after two-stage crushing to except the concrete granular material after ferrum and removal light materials Concrete particle, by Belt Conveying to four layer vibrosieve, be sieved into≤2.36mm, 2.36mm~4.75mm, 4.75mm~9.5mm, 9.5mm~31.5mm, five kinds of particle size range of >=31.5mm.Wherein≤2.36mm, 2.36mm~4.75mm fine aggregate Belt Conveying is deposited to fine aggregate stockyard, 4.75mm~9.5mm, 9.5mm~31.5mm coarse aggregate Belt Conveying is deposited respectively to coarse aggregate stockyard, and particle diameter >=31.5mm's is mixed Solidifying soil particle returns after cone crusher crushes again and sieves, and so moves in circles, and the particle diameter prepared≤ The fine aggregate of 2.36mm meets Machine-made Sand grain composition requirement, by 4.75mm~9.5mm, 9.5mm~31.5mm In the range of coarse aggregate be modulated into nominal particle diameter according to mass ratio 1:1 ratio by Belt Conveying and be The continuous grading regenerated coarse aggregate of 5mm~31.5mm, utilizes sand washer to wash recycled fine aggregate, washes Sand use water recycles, and by conveyer belt, the regenerated coarse aggregate of preparation is delivered to autogenous tumbling mill shaping, after shaping Regenerated coarse aggregate immerse dilute with water 6 times organic silicon solution in, stirred during immersion, to drive away Regenerated coarse aggregate blibbing, pulls regenerated coarse aggregate out after 24h, be finished product and stack, broken in one-level, two Level is broken with in screening process, is processed dust by atomization dust-collecting equipment, recycled fine aggregate and regeneration Coarse aggregate leading indicator meets GB/T 25176-2010 " concrete and mortar recycled fine aggregate ", GB/T 25177-2010 " concrete regenerated coarse aggregate " requirement;
Step 3, Primary batching system stirs: by Portland cement (P O42.5) 245kg, ecological gelling material Material 95kg is discharged into special fine powder batch mixer after measuring respectively simultaneously, is discharged into blender after mix homogeneously, adds Natural fine aggregate 400kg, on-line checking natural fine water content ratio of aggregate is 1.2%, recycled fine aggregate 320kg, water 100kg, stirs pulping;
Step 4, second batch stirs: by natural coarse aggregate 900kg through pre-homogenizing, on-line checking is natural Coarse aggregate moisture content is 1.4%, through the regenerated coarse aggregate 472kg of pre-homogenizing, water 42.6kg, pumping admixture 7.5kg Add blender, mix the mortar second batch made of slurry mix with being dry mixed through Primary batching system, wherein, by Line detects, and concrete 17.4kg water brought into by natural thick, fine aggregate, and in step 4, added moisture should be by this part Deduction.
Test preparation the C30 eco-concrete slump be 230mm, 7d comprcssive strength be 30.7MPa, 28d Comprcssive strength is 39.6MPa.
When preparing C40 eco-concrete, its technical process and parameter such as embodiment 2:
Step 1,2 same as in Example 1.
Step 3, Primary batching system stirs: by Portland cement (P O42.5) 350kg, ecological gelling material Material 110kg is discharged into special fine powder batch mixer after measuring respectively simultaneously, is discharged into blender, adds after mix homogeneously Entering natural fine aggregate 480kg, on-line checking natural fine water content ratio of aggregate is 1.3%, recycled fine aggregate 210kg, Water 100kg, stirs pulping;
Step 4, second batch stirs: by natural coarse aggregate 910kg through pre-homogenizing, on-line checking is natural Coarse aggregate moisture content is 1.1%, through the regenerated coarse aggregate 215kg of pre-homogenizing, water 48.75kg, pumping admixture 9kg Add blender, add and starch the mortar second batch made mix with being dry mixed to mix through Primary batching system.Wherein, logical Crossing on-line checking, concrete 16.25kg water brought into by natural thick, fine aggregate, and in step 4, added moisture be answered and be incited somebody to action this Part deduction.
Test preparation the C40 eco-concrete slump be 220mm, 7d comprcssive strength be 37.5MPa, 28d Comprcssive strength is 49.3MPa.

Claims (10)

1. the production technology of an eco-concrete, it is characterised in that comprise the steps:
Step 1, prepared by ecological Binder Materials: the construction waste clay brick material sub-elected through volumetric method is passed through magnetic Screening device and light materials sorting unit remove irony material and light materials, are broken for size≤50mm through disintegrating apparatus Block brick material, by Vertical Mill superfine grinding after magnetic separation, prepare specific surface area >=500m2The clay brick powder of/kg, In grinding process, allocate a certain proportion of chemical activator into, and be combined with slag micropowder, preparation ecology gelling Material;
Step 2, prepared by regeneration aggregate: crushed by one-level by the construction waste concrete material sorted through volumetric method Prepare the granular material of particle diameter≤80mm, remove irony material with light by concentration equipment and light materials sorting unit Material, then prepares the aggregate of different-grain diameter by two-stage crushing and screening system, and compound preparation is more in proportion Raw aggregate, during sieving approach, by atomising device dedusting;
Step 3, Primary batching system stirs: according to the match ratio requirement of different strength concrete, by cement, Ecological Binder Materials is discharged into powder mixing device after measuring respectively simultaneously and carries out pre-homogenizing being dry mixed, after mix homogeneously Being discharged into blender, pro rata heavily adds natural fine aggregate and recycled fine aggregate and gross water requirement 60%~80% Water stirring pulping;
Step 4, second batch stirs: by through the natural coarse aggregate of pre-homogenizing, regenerated coarse aggregate, residue water Blender is heavily added, with the slurry mix and blend made through Primary batching system stirring with pumping admixture pro rata.
A kind of eco-concrete the most according to claim 1, it is characterised in that in step 1, building is useless Abandon clay brick material to obtain in the following way from building waste:
By loader, building waste is fed apron feeder, and building waste is sent into sorting by apron feeder Machine, utilizes volumetric method sand discarded in building waste, discarded clay brick, discarded concrete to be separated, and formation is built Build discarded sand material, construction waste clay brick material and three kinds of primary product of construction waste concrete material;Wherein, institute State the discarded clay solid brick that is mainly composed of of construction waste clay brick material, also comprise very small amount particle diameter≤70mm Concrete block.
A kind of eco-concrete the most according to claim 1 and 2, it is characterised in that change in step 1 Exciting agent is one or more of Gypsum Fibrosum, Calx, triisopropanolamine and diethanol monoisopropanolamine, phase The addition is answered to be: Calx 1.5~5%, Gypsum Fibrosum 4~6%, triisopropanolamine 0.015~0.03%, diethanol list Isopropanolamine 0.015~0.03%, is the mass percent of clay brick powder, and in step 1, slag micropowder volume is The 0%~40% of clay brick opaque amount, the specific surface area >=450m of described slag micropowder2/kg。
A kind of eco-concrete the most according to claim 1, it is characterised in that construction waste in step 2 Concrete material obtains in the following way:
By loader, building waste is fed apron feeder, and building waste is sent into sorting by apron feeder Machine, utilizes volumetric method sand discarded in building waste, discarded clay brick, discarded concrete to be separated, and formation is built Build discarded sand material, construction waste clay brick material and three kinds of primary product of construction waste concrete material;Described building Discarded concrete material, it is mainly composed of discarded building girder, plate, post concrete block.
5. according to a kind of eco-concrete described in claim 1 or 4, it is characterised in that in step 2 two The broken device therefor of level is impact breaker, cone crusher or vertical-spindle hammer crusher, screening system For vibrosieve, it is made up of, on D4 sieve four layers of screen cloth that screen size from bottom to top is D1, D2, D3, D4 Material returns after two-stage crushing device carries out crushing and again sieves, and minus mesh at different levels are stored respectively by particle diameter;Its Middle D1 be 2.36mm, D2 be 4.75mm, D3 be 9.5mm, when two-stage crushing device therefor is reaction type During disintegrating machine, D4 is 26.5mm, when two-stage crushing device therefor is that cone crusher or vertical shaft hammer break During broken machine, D4 is 31.5mm.
A kind of eco-concrete the most according to claim 5, it is characterised in that D1 in step 2, One during D2 minus mesh is combined in proportion is recycled fine aggregate, and D2, D3 oversize is compound in proportion to be prepared Regenerated coarse aggregate, compositely proportional should make slightly, fine aggregate meets grain composition requirement, the compound ratio of recycled fine aggregate Example is D1 minus mesh: D2 minus mesh is 70~100:30~0, and regenerated coarse aggregate compositely proportional is D2 oversize: D3 oversize is 30~50:70~50.
7. according to a kind of eco-concrete described in claim 1 or 4, it is characterised in that the regeneration of preparation It, after autogenous grinding shaping, is carried out strengthening water conservation by coarse aggregate by chemical enhancer, improves regeneration with further Coarse aggregate intensity, reduction water absorption rate, recycled fine aggregate removes micropowder and clod through washing.
A kind of eco-concrete the most according to claim 7, it is characterised in that described chemical enhancer For polyvinyl alcohol or organosilicon, when for polyvinyl alcohol, poly-vinyl alcohol solution mass concentration is 0.5%, regeneration Coarse aggregate soak time is 36~48h;When for organosilicon, by organosilicon dilute with water 5~6 times of uses, then Raw coarse aggregate soak time is 12~24h.
The production technology of a kind of eco-concrete the most according to claim 1, it is characterised in that described In step 3 and step 4, the consumption of each component is:
PO42.5 cement: 238kg~272kg
Ecological Binder Materials: 68kg~102kg
Water: 160kg
Pumping admixture: 6.8kg~8.5kg
Natural coarse aggregate: 820kg~1172kg
Regenerated coarse aggregate: 0~352kg
Natural fine aggregate: 360kg~720kg
Recycled fine aggregate: 0~360kg
Thus proportioning obtains C30 eco-concrete;
Or,
PO42.5 cement: 322kg~368kg
Ecological Binder Materials: 92kg~138kg
Water: 165kg
Pumping admixture: 9.2kg~11.5kg
Natural coarse aggregate: 787kg~1125kg
Regenerated coarse aggregate: 0~338kg
Natural fine aggregate: 345kg~690kg
Recycled fine aggregate: 0~345kg
Thus proportioning obtains C40 eco-concrete.
The production technology of a kind of eco-concrete the most according to claim 1, it is characterised in that institute State in step 3 and step 4, use online detection instrument, measure the moisture content in natural thick, fine aggregate, Feed back central control system in time, brought into moisture in natural thick, fine aggregate is deducted in gross water requirement.
CN201610364519.7A 2016-05-26 2016-05-26 Production technology of ecological concrete Pending CN105948545A (en)

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CN106734083A (en) * 2016-12-19 2017-05-31 北京环境工程技术有限公司 A kind of mechanical pretreatment system and technique for Urban Domestic Waste Comprehensive Treatment
CN106746958A (en) * 2016-11-25 2017-05-31 四川菱通智能环保产业有限公司 The preparation method that hollow concrete is laid bricks is prepared using discarded concrete
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CN107686295A (en) * 2017-09-30 2018-02-13 翟孝东 A kind of dry-mixed mortar production method
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CN112388821A (en) * 2020-11-24 2021-02-23 涉县清漳水泥制造有限公司 Manufacturing method of solid waste base cementing material concrete and quantitative feeding device

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CN106746958B (en) * 2016-11-25 2018-12-21 四川菱通智能环保产业有限公司 The preparation method that hollow concrete is laid bricks is prepared using discarded concrete
CN106746958A (en) * 2016-11-25 2017-05-31 四川菱通智能环保产业有限公司 The preparation method that hollow concrete is laid bricks is prepared using discarded concrete
CN106734083A (en) * 2016-12-19 2017-05-31 北京环境工程技术有限公司 A kind of mechanical pretreatment system and technique for Urban Domestic Waste Comprehensive Treatment
CN106734083B (en) * 2016-12-19 2019-01-15 北京环境工程技术有限公司 A kind of mechanical pretreatment system and technique for Urban Domestic Waste Comprehensive Treatment
CN107686295A (en) * 2017-09-30 2018-02-13 翟孝东 A kind of dry-mixed mortar production method
CN107445563A (en) * 2017-09-30 2017-12-08 徐州中新机械科技有限公司 A kind of dry-mixed mortar
CN107935487B (en) * 2017-11-28 2020-10-30 山东众森新材料有限公司 Method for producing functional material by utilizing solid waste and application
CN107935487A (en) * 2017-11-28 2018-04-20 山东众森节能材料有限公司 A kind of method and application using solid waste production functional form material
CN108083702A (en) * 2017-12-27 2018-05-29 新昌县隆豪轴承有限公司 A kind of environment friendly wall brick production technology
CN109369128A (en) * 2018-10-19 2019-02-22 户县融基建材有限责任公司 A kind of method and its building block using building waste and mill tailings preparation building block
CN110092613A (en) * 2019-04-04 2019-08-06 启东海中港建材有限公司 A kind of environmental type concrete and its production technology
CN110357487A (en) * 2019-08-08 2019-10-22 湖南加美乐素新材料股份有限公司 A kind of Machine-made Sand regulator and its containing the purposes in machine-made sand concrete
CN110734256A (en) * 2019-11-15 2020-01-31 扬州大学 foam concrete doped with recycled brick powder and preparation method thereof
CN111732384A (en) * 2020-06-22 2020-10-02 福建鸿生建材发展有限公司 Preparation method of high polymer recycled concrete
CN112174613A (en) * 2020-10-12 2021-01-05 北京新奥混凝土集团有限公司 Concrete containing waste brick powder
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